[PKumarM3]

Originally Posted by Rob@Cobb

Interesting...

jesus christ

83 hp / 97 lb tq

what other modifications? fmic? intake? downpipes?

[Nor_Cal_335i]

Originally Posted by Rob@Cobb

Interesting...

Info....

[Rob@Cobb]

Originally Posted by Sparkplug

As a Dinan flash adopter, I am attracted to this tune because of the ability to reflash at home without having to drive 350 +miles to the nearest Dinan dealer. I am also interested in the potential pop in power vs. Dinan S3. With my car coming off warranty this year, that isn't a concern. So a couple of questions:

1. Will it safely overwite the Dinan tune, or will you have to get it flashed back to stock first? and

2. If it can flash over the Dinan tune, when you flash back to stock, will it restore the Dinan tune or to stock?

Thanks in advance. It looks like an exciting product.

Having never touched a car with a Dinan flash, I cannot say with 100% certainty. I can say I will be happy to personally walk you through the process to find out using an AP.

There are three things that can happen:
1. The AP saves off the dinan flash an puts our tune on.
2. The AP says it must overwrite the tune meaning, if you continue, the Dinan flash will be gone forever.
3. The AP is unable to flash over the tune requiring the car to be returned to stock first.

In the case where the AP overwrites a tune: The AP, having never seen your actual stock ROM, will put back an appropriate stock ROM that may or may not be what your car had originally.

I hope this helps,
Rob

[Rob@Cobb]

Originally Posted by PKumarM3

jesus christ

83 hp / 97 lb tq

what other modifications? fmic? intake? downpipes?

I believe the only modification was DCIs. Most all of these graphs are in our dyno database if y'all want to peruse it. http://accessecu.com/dyno/

Cheers,
Rob

[Tortfeasor 335xi]

Those are some solid looking dynos for the 335xi. Looking forward to the final product. Any data on A/F ratio? Any dynos of bone stock 335xi's?

[sA x sKy]

If the 335xi is getting those numbers, I'm going to be really, really happy.

[PKumarM3]

335xi owners are in for a real treat. i am hoping that the xi a/p will be ready by february!

[Rob@Cobb]

Originally Posted by Tortfeasor 335xi

Those are some solid looking dynos for the 335xi. Looking forward to the final product. Any data on A/F ratio? Any dynos of bone stock 335xi's?

AFR should be a very safe 12.0-12.5.

Originally Posted by PKumarM3

335xi owners are in for a real treat. i am hoping that the xi a/p will be ready by february!

This coming week should really make you happy.

Cheers,
Rob

[PKumarM3]

Originally Posted by Rob@Cobb

This coming week should really make you happy.

Cheers,
Rob

hahah i don't like to rush tuners! but in that case




whenever i hear accessport i think of that Hitler GTR video where the lady consoles the other saying "don't worry, he won't sell it, he just ordered his acess port"

hahaha

[**335i**]

Originally Posted by kjrulz

corrected

JB3 = _75___ HP gain (avg with no other mods)

Vishnu latest = __75__ HP gain (avg with no other mods)

COBB = __75__ HP gain (avg with no other mods)

did u dyno all tunes?

[UltraRacer13]

The xi dyno charts are my car. Running just a DCI. Ran a pull w/jb3 map 5, pulled the jb3, ran a stock pull 25 minutes later, then installed the AP and did that run. Go to the cobb website to see all the graphs, you can also see AFR and boost. I posted a thread about it here..

http://www.e90post.com/forums/showthread.php?t=473908

On a side note- the guys at Cobb in Plano are awesome. Calvin and Chris really know what they are doing! When we had to pull the jb3, they were making fun of me..."your kidding, you have to do this every time!..."

[phil_]

Originally Posted by Rob@Cobb

This coming week should really make you happy.

Cheers,
Rob

That's awesome, I ordered the AP on Thursday figuring it would be sorted out by the time it made it up to the great white north.

Are there any concerns running the AP in extreme cold weather. I've read that the DME can be boost happy in cold temperatures.

Phil

[RR80]

Originally Posted by Nor_Cal_335i

Army335xi has the right idea.

A piggyback just modifys signals sent and received by the ECU. So it can be used by a USDM ECU or EDM ECU.

When dealing with flashing, like Army said, your completely rewriting the code (aka ROM or IMAGE) on that ECU. Now, when flashing you need to know the type of ECU and the exact coding of the ROM or IMAGE on it. Even if you can flash/modify a USDM ROM on ECU MSD80, you may not know the coding for the EDM ROM on the same ECU, and therefore would be unsafe to try to flash or modify the code.

I dont know if that exactly the case here, but maybe that helps explain more.

That's made sence~~ all we can do now is to wait! AP will be my final solution!

[themyst]

Originally Posted by phil_

That's awesome, I ordered the AP on Thursday figuring it would be sorted out by the time it made it up to the great white north.

Are there any concerns running the AP in extreme cold weather. I've read that the DME can be boost happy in cold temperatures.

Phil

It's the other way around, the ECU in stock form will reduce boost in cold temps.

[AWD Addict]

Originally Posted by Rob@Cobb

Interesting...

Awesome.

[UltraRacer13]

both the power AND torque bands are smoother than stock!!!

[materialdistractions]

What's the eta for the 07 cars? Itching to try this.

[AWD Addict]

How's the non-WOT, regular driving compared to stock?

[AWD Addict]

Just for giggles, here's the 335i and 335xi runs overlaid. Not surprisingly, they're basically clones. I'd attribute the slight differences to simple tune-to-tune variation.

The only metric I thought interesting was the early AFR lean condition running later on the xi. It took almost 1000rpms more for the xi to settle down to 12.

[vasillalov]

Rob,

I have another technical question for you. Perhaps this has already been answered and I've missed it.

How are things handled when it comes to ECU version upgrades? Example: my car just got back from a software recall last week. The BMW dealer installed ISTA 2.40.2 which essentially wiped my GIAC Stage 1. Not only that, but now my ECU is reporting a different internal part number.

Naturally, I have to wait for GIAC to release an updated flash tune for the latest BMW firmware. This is important because the latest firmware versions contain instructions and algorithms which allegedly help prevent failures of HPFP.

How are things done with the COBB access port? I see that I can download the Stage 1 map for free and I can always update my ECU if it gets wiped out by the dealer.

But wouldn't that revert my formware version?

The way things are handled in GIAC world are as follows:

* GIAC installer obtains a "read file" directly from my ECU.
* GIAC installer submits this file to GIAC central along with customer information
* GIAC prepares an updated flash file specifically tailored to my ECU number and software version, thus preserving the BMW updates.
* GIAC installer then loads the file into my ECU.


Obviously this is somewhat inconvenient because I have to go see a GIAC installer.

How is COBB handling this?

[cadeucsb]

I think Cobb does the same. You will try to run the AP with your new ecu flash from bmw and the AP will error. You then email the file that the AP grabs to Cobb and a new tune will be developed for benefit of everyone on that new bmw flash. I think they stated 5 day turn around.

Originally Posted by vasillalov

Rob,

I have another technical question for you. Perhaps this has already been answered and I've missed it.

How are things handled when it comes to ECU version upgrades? Example: my car just got back from a software recall last week. The BMW dealer installed ISTA 2.40.2 which essentially wiped my GIAC Stage 1. Not only that, but now my ECU is reporting a different internal part number.

Naturally, I have to wait for GIAC to release an updated flash tune for the latest BMW firmware. This is important because the latest firmware versions contain instructions and algorithms which allegedly help prevent failures of HPFP.

How are things done with the COBB access port? I see that I can download the Stage 1 map for free and I can always update my ECU if it gets wiped out by the dealer.

But wouldn't that revert my formware version?

The way things are handled in GIAC world are as follows:

* GIAC installer obtains a "read file" directly from my ECU.
* GIAC installer submits this file to GIAC central along with customer information
* GIAC prepares an updated flash file specifically tailored to my ECU number and software version, thus preserving the BMW updates.
* GIAC installer then loads the file into my ECU.


Obviously this is somewhat inconvenient because I have to go see a GIAC installer.

How is COBB handling this?

[vasillalov]

Originally Posted by cadeucsb

I think Cobb does the same. You will try to run the AP with your new ecu flash from bmw and the AP will error. You then email the file that the AP grabs to Cobb and a new tune will be developed for benefit of everyone on that new bmw flash. I think they stated 5 day turn around.

COBB: Bravo! This is very well designed indeed! I guess I will have to wait till COBB releases Stage 2. Then, I'll make the decision whether to switch from GIAC to COBB because I am definitely heading towards Stage 2.